UL-Listed Galvan Gold Series
Galvanized Ground Rods
Cost Savings and Code Compliance Since 2004
Since Galvan Industries brought the first UL-Listed galvanized ground rod to
market in 2004, electrical contractors and inspectors now think differently
about ground rods.
Today’s contractors see listed galvanized
ground rods as a cost-saving, easierdriving alternative to full-size rods. A listed
galvanized rod also gives contractors the
flexibility to choose a safe, code-compliant
product with either copper-coated or
galvanized corrosion protection, depending
on their needs.
Many inspectors now ask contractors to
leave a shovel-full of dirt away from the
top of the rod for inspections. When the
listing symbol is visible on any ground rod,
they know it meets code. When there is no
visible listing mark, it is impossible to know
if a driven rod meets NEC requirements,
especially for length.
First in Compliance, First in Quality
Galvan’s Gold Series UL-Listed galvanized ground rods are manufactured in
the USA with distinct advantages over ordinary galvanized rods.
•
Identical steel core to UL-listed copper rods
UL stamp assures quality and compliance
• Chamfer eliminates mushrooming on drive end
• No sharp edges on safe conical point
• Conical point and chamfer ensure easy, secure coupling
• Hot dip galvanized to ASTM A123
• SAE 1035 steel core for increased hardness, tensile strength and straightness
• “Green” manufacturing with "closed loop" systems that completely
eliminate hazardous wastes from the manufacturing process
•
For more information or to place an order, contact your local Galvan distributor
or Galvan Industries today.
800-277-5678, www.galvanelectrical.com
•
What The Experts Say About UL-Listed
Galvanized Ground Rods
NEC 250.52.A.5 (b) Rod type electrodes of stainless steel and
copper or zinc coated steel shall be at least 15.87 mm (5/8 in.)
in diameter, unless listed.
NFPA 70, National Electrical Code 2011 and 2014
Question: How can UL listed galvanized ground
rods with a nominal thickness of less than 5/8
inch in diameter still comply with 250.52.A.5 of
NFPA 70 (NEC)?
Answer: Rod electrodes are just one of the many types of
grounding electrodes permitted in the National Electrical
Code (NEC). Rod electrodes are required to be at least
5/8 inch in diameter unless Listed, in which case they
are permitted to be not less than 1/2 inch in diameter.
Ground rods less than 5/8 inch but not less than 1/2 inch
in diameter are listed using ANSI/UL 467, Standard for
Safety for Grounding and Bonding Equipment. They
have been subjected to the equivalent performance criteria
as a copper-clad (nonferrous) steel ground rod. In addition,
they comply with the construction requirements specified in
ANSI/NEMA GR1, Grounding Rod Electrodes and
Grounding Rod Couplings.
The steel cores of galvanized steel rods and copperclad rods have the same tensile strength and
Rockwell hardness. The differences are in the minimum
copper cladding thickness vs. the minimum zinc deposit
thickness. These vary due to the differences in there
respective protection scheme as well as the manufacturing
process. The copper cladding protects the steel much like
shrink tubing, whereas the zinc Galvanizing forms a metallurgical bond with the iron. This bond is hardest at the ferris
surface. Consequently, the zinc galvanizing can be applied
at a lesser thickness than the copper cladding.
Galvan UL-Listed Galvanized Ground Rods
Catalog
Number
GR6258
GR6250
Nominal
Diameter
& Length
5/8" x 8'
5/8" x 10'
Sub &
Master
Bundle
5/100
5/100
Weight
per
100
640
941
NAED
UPC No.
632591
70702-2
70703-9
NOTE: Galvan also manufacturers full-size (.625”) listed galvanized ground rods
for utilities, co-ops and others. For full size rods, specify GR6258F.
Galvan Gold Series ground rods are used in construction,
cable TV, lightning protection, power generation,
telecommunications and manufacturing applications
and stocked by better distributors everywhere
Jake Killinger, Underwriters Laborites, Inc.
Authority Electrical Connections, May 2005
“Until Galvan introduced the listed galvanized ground rod, no
zinc coated rod met the strictest interpretation of this code by
complying with the requirement of being “larger than 0.500
inches in diameter and listed.”
IAEI News, Nov./Dec. 2003, Page 26 IAEA
International Association of Electrical Inspectors
GALVAN INDUSTRIES, INC. Electrical Products Division, 800-277-5678, www.galvanelectrical.com
GULFLYER09201